The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each monthly issue includes expert science reporting, vivid color photography, complete sky coverage, spot-on observing tips, informative telescope reviews, and much more! All this in a user-friendly style that's perfect for astronomers at any level.
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STUNNING SPIRAL • A galaxy spreads its arms wide.
HUBBLE CONFIRMS UNIVERSE’S FAST EXPANSION RATE • The cosmos is expanding more quickly than expected, prompting astronomers to ask why.
A distant galaxy speeds closer
Polar ice offers a peek at Mars’ past
APOLLO-ERA QUAKES HINT THE MOON IS STILL ACTIVE
IT’S WHAT’S ON THE INSIDE THAT COUNTS
Dangers from the sky • Are meteorites a health hazard?
YOU VOTED. HERE ARE YOUR PICKS! • ASTRONOMY READERS POLLS VOTES
Are we alone in THE SOLAR SYSTEM? • Mars, Pluto, and an array of icy moons offer possible places where microbial life might have existed — or might yet exist today.
Is there life on MARS? • Earth’s neighbor once had a climate conducive to life. Now scientists are trying to learn if the Red Planet turned those chances into reality.
How we might find LIFE ON EUROPA • Jupiter’s icy moon is a great candidate for habitability. But life’s best chance to exist is beneath the crust.
Neptune peaks in Aquarius • THE SOLAR SYSTEM’S CHANGING LANDSCAPE AS IT APPEARS IN EARTH’S SKY.
RISING MOON • A terrific trio of terraced craters
METEOR WATCH • Catch the false dawn
PATHS OF THE PLANETS
COMET SEARCH • A speedy visitor grows an anti-tail
LOCATING ASTEROIDS • Catch Ceres among colorful clouds
Searching for life on SATURN'S BIG MOON • Titan’s soupy skies drizzle complex hydrocarbons onto the moon’s surface, potentially providing the building blocks of life.
The enigma of ENCELADUS • This tiny saturnian moon may be, pound for pound, the most valuable piece of real estate in the solar system.
What lies beneath TRITON'S ICE? • Neptune’s moon Triton shows tantalizing evidence of water beneath its jumbled crust, making it a high-priority target in the search for life.
STUDYING TRITON FROM AFAR
Life’s prospects on PLUTO • Who would have thought this dwarf planet could nurture life? The idea seemed ludicrous before New Horizons explored the world.
The stars of Lyra • A parallelogram of fun awaits you in this tiny constellation.
The coalsacks of Cygnus • Turn your gaze to some of the darker regions of our universe.
Telescopic targets in Scorpius • Let’s complete our tour by zooming in on the Scorpion’s gems.
Mercury transits the Sun